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66199c9f03
Disabling OpenMP generally provides better inference performance (at
least in my testing) but the loading becomes slightly slower.
Benchmark results for `convert_B_packed_format()`:
Before this commit:
N K | No OpenMP OpenMP | Diff | Speedup
------------------------------------------------------------
512 2880 | 640.9us 263.5us | -58.9% | 0.41x
2880 4096 | 2.55ms 261.7us | -89.8% | 0.10x
201088 2880 | 256.44ms 21.61ms | -91.6% | 0.08x
------------------------------------------------------------
Total: 325.43ms vs 31.05ms
After:
N K | No OpenMP OpenMP | Diff | Speedup
------------------------------------------------------------
512 2880 | 1.49ms 263.5us | -82.3% | 0.18x
2880 4096 | 1.55ms 261.7us | -83.1% | 0.17x
201088 2880 | 24.03ms 21.61ms | -10.1% | 0.90x
------------------------------------------------------------
Total: 78.97ms vs 31.05ms
Tested with unsloth/gpt-oss-20b-GGUF:Q4_K_M.
Signed-off-by: Adrien Gallouët <angt@huggingface.co>